Help! I really hope someone can offer some advice. Zimbra based email.

About 12-15 times a day I received emails that are titled " From: Mail Delivery System <mailer-daemon@comcast.net>
Subject: Delivery status notification". It looks like a bounced email from me and the receiver of the the message is always the same: a made up email address "chaplinre@yahoo.com".

Attached to the bounced email in Mail Attachment form is a garbled up email from an actual sender who is trying to email me. The only thing in the attachement is code but I can see who was sending the email so I know if it's one of my clients/friends/etc.

Here is where Zimbra comes in: at the end of each of these mail attachments/garbled emails it says" X-Mailer: Zimbra 6.0.13_GA_2944

So the common denominator between all these messed up emails is that the sender is using Zimbra. So my question is: what can I do? Is this happening because of something set up in my email account? I know it's not a computer problem because it's happening on all of my computers.

I hope you can picture I described above. It's really becoming a huge problem.
Thanks!

About 12-15 times a day I received emails that are titled " From: Mail Delivery System <mailer-daemon@comcast.net>
Subject: Delivery status notification". It looks like a bounced email from me and the receiver of the the message is always the same: a made up email address "chaplinre@yahoo.com".

Attached to the bounced email in Mail Attachment form is a garbled up email from an actual sender who is trying to email me. The only thing in the attachement is code but I can see who was sending the email so I know if it's one of my clients/friends/etc.

Here is where Zimbra comes in: at the end of each of these mail attachments/garbled emails it says" X-Mailer: Zimbra 6.0.13_GA_2944

That's not necessarily true.

Originally Posted by allisoncottrill

So the common denominator between all these messed up emails is that the sender is using Zimbra. So my question is: what can I do? Is this happening because of something set up in my email account? I know it's not a computer problem because it's happening on all of my computers.

The problem here is not the fact the the mail appears to be sent from a Zimbra server, this is actually a form of spam known as NDR spam (or backscatter) - it's a method of delivering spam to a target users mailbox (i.e. your mailbox). There is absolutely nothing anyone on these forums can do to help you. The ZCS software is free to use and anyone can download it and use as their mail server and neither we (the forum members) or Zimbra (the company) can do anything specific to tell you which server sent the mail or how to stop it. You could look at the mail headers to see if there’s anything else that identifies the domain name of the server (and possibly send the admin an email about this problem). I would suggest you do nothing with these emails other than delete them, they will most likely contain a virus - don't under any circumstances try and open them.

contact comcast you need them to setup reverse dns to point comcast ip to your domian name. Example when you send an e-mail to someone there system may do a reverse DNS look up and what there system will say is you domain name does not match ip domain name so e-mail gets rejected. your domain name that you used has the primary for your server/ DNS has to has to be married to that IP address provide by carrier in order for reverse DNS lookup to find you. A 10 minute phone call will fix many issues that has nothing to do with setting up server or zimbra.